tree cbe43672e70bc3fdcaf47c311dfabc8d282cacd5
parent 25b14610dab655646a109db5ef8cb4c4bf2a48a0
author Darren Tucker <dtucker@zip.com.au> 1437101554 +1000
committer Darren Tucker <dtucker@zip.com.au> 1437101882 +1000

Check if realpath works on nonexistent files.

On some platforms the native realpath doesn't work with non-existent
files (this is actually specified in some versions of POSIX), however
the sftp spec says its realpath with "canonicalize any given path name".
On those platforms, use realpath from the compat library.

In addition, when compiling with -DFORTIFY_SOURCE, glibc redefines
the realpath symbol to the checked version, so redefine ours to
something else so we pick up the compat version we want.

bz#2428, ok djm@